*{
    /*初始化*/
    margin: 0;
    padding: 0;
}
body{
    /*100%窗口高度*/
    height: 100vh;
    /*弹性布局  居中*/
    display: flex;
    justify-content: center;
    align-items: center;
    /*渐变背景*/
    background: linear-gradient(200deg,#e3c5eb,#a9c1ed);
    /*溢出隐藏*/
    overflow: hidden;
}
.container{
    /*相对定位*/
    position: relative;
    z-index: 1;
    background-color: #fff;
    border-radius: 15px;
    /*弹性布局  垂直排列*/
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 350px;
    height: 500px;
    /*阴影*/
    box-shadow: 0 5px 20px rgba(0,0,0,.1);
}
.container .tit{
    font-size: 26px;
    margin: 65px auto 70px auto;
}
.container input{
    width: 280px;
    height: 30px;
    text-indent: 8px;
    border: none;
    border-bottom: 1px solid #ddd;
    outline: none;
    margin: 12px auto;
}
.container button{
    width: 200px;
    height:40px;
    margin: 35px auto 40px auto ;
    border: none;
    background: linear-gradient(-200deg,#fac0e7,#aac2ee);
    color: #fff;
    font-weight: bold;
    letter-spacing: 8px;
    border-radius: 10px;
    cursor: pointer;
    /*动画过渡*/
    transition: 0.5s;
}
.container button:hover{
    background: linear-gradient(-200deg,#aac2ee,#fac0e7);
    background-position-x: -200px;
}
.container span{
    font-size: 14px;
}
.container a{
    color: plum;
    text-decoration: none;
}
ul li{
    position: absolute;
    border: 1px solid #fff;
    background-color: #fff;
    width: 30px;
    height: 30px;
    list-style: none;
    opacity: 0;
}
.square li{
    top: 40vh;
    left: 60vw;
    /*执行动画： 动画名 时长 线性的 无限次播放*/
    animation: square 10s linear infinite;
}
.square li:nth-child(2){
    top: 80vh;
    left:10vw;
    /*设置动画延迟时间*/
    animation-delay: 2s;
}
.square li:nth-child(3){
    top: 80vh;
    left:85vw;
    /*设置动画延迟时间*/
    animation-delay: 4s;
}
.square li:nth-child(4){
    top: 10vh;
    left:70vw;
    /*设置动画延迟时间*/
    animation-delay: 6s;
}
.square li:nth-child(5){
    top: 10vh;
    left:10vw;
    /*设置动画延迟时间*/
    animation-delay: 8s;
}
.circle li{
    bottom: 0;
    left: 15vw;
    animation: circle 10s linear infinite;
}
.circle li:nth-child(2){
    left: 35vw;
    animation-delay: 2s;
}
.circle li:nth-child(3){
    left: 55vw;
    animation-delay: 6s;
}
.circle li:nth-child(4){
    left: 75vw;
    animation-delay: 4s;
}
.circle li:nth-child(5){
    left: 90vw;
    animation-delay: 8s;
}
/*定义动画*/
@keyframes square {
    0%{
        transform: scale(0) rotate(0deg);
        opacity: 1;
    }
    100%{
        transform: scale(5) rotate(1000deg);
        opacity: 0;
    }
}
@keyframes circle {
    0%{
        transform: scale(0) rotate(0deg);
        opacity: 1;
        bottom: 0;
        border-radius: 0;
    }
    100%{
        transform: scale(5) rotate(1000deg);
        opacity: 0;
        bottom: 90vh;
        border-radius: 50%;
    }
    }